How to convert a currency string to a double with jQuery or Javascript?

Question

I have a text box that will have a currency string in it that I then need to convert that string to a double to perform some operations on it.

\"$1,1

Answer 1

I know this is an old question, but CMS's answer seems to have one tiny little flaw: it only works if currency format uses "." as decimal separator. For example, if you need to work with russian rubles, the string will look like this: "1 000,00 rub."

My solution is far less elegant than CMS's, but it should do the trick.

var currency = "1 000,00 rub."; //it works for US-style currency strings as well
var cur_re = /\D*(\d+|\d.*?\d)(?:\D+(\d{2}))?\D*$/;
var parts = cur_re.exec(currency);
var number = parseFloat(parts[1].replace(/\D/,'')+'.'+(parts[2]?parts[2]:'00'));
console.log(number.toFixed(2));

Assumptions:

• currency value uses decimal notation
• there are no digits in the string that are not a part of the currency value
• currency value contains either 0 or 2 digits in its fractional part *

The regexp can even handle something like "1,999 dollars and 99 cents", though it isn't an intended feature and it should not be relied upon.

Hope this will help someone.